Composite toe meets or exceeds ASTM F2413-11 standards for impact and compression Composite toe caps will not conduct heat, cold or electricity Meets or exceeds ASTM class 75 Impact and Compression standards Under Class 75 test for impact the boot must withstand a 75 lb. impact with 0.50" clearance Under Class 75 test for compression the boot must withstand 2,500 lbs. of compression while maintaining at least 0.50" clearance Electrical hazard protection meets ASTM EH standards Under dry conditions EH protection must be able to endure the application of 18,000 volts at 60 hertz for one minute with no current flow or leakage current in excess of 1.0 milliamperes Non-conductive electrical shock resistant soles and heels protect against accidental contact with live electrical circuits, electrically energized conductors, parts or apparatus The patented J-Flex Comfort System features a cushioned insole and triple density insole to provide energy returning comfort Lightweight nylon shank for torsional stability and better arch support Combination rubber and EVA outsole offers lightweight durability Outsole provides excellent abrasion-, chip- and slip-resistance Outsole provides good heat-, chemical-, oil- and gas-resistance Handler square toe box provides room for toes to spread for ultimate comfort Secure leather pull straps make pulling the boots on easy 100% non-metallic Due to the unique leather tanning process, slight variations in color may be evident